In Brazil it is ilegal to launch those kind of baloons because of a long history of damages and destruction caused by them. Such campaigns are still necessary because so many people are not aware of the risks, nor the prohibition.
Of course it is a local matter, but still is a nice campaign. Congrats!

During the month of June, Festas Juninas (June Festivals) are held all month long in Brazil. They are extremely traditional and popular parties with a country music-like theme where people gather to have a good time. However there is one custom, which has terrible consequences on the environment, that people are unaware of: releasing hot air balloons in the air.
Very Nice work. Congratulations!